Air In Cooling System?
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Joined: Oct 2005
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Air In Cooling System?
I Have A 95 Aero With A 3.ol It Has Almost 200,000 Miles On It My Problem Is That I Changed The Water Pump The Old One Had No Fins Left On It . After That This Problem Started When You Let Run In Idle After Driving It There Is This Thud And Click Comeing From The Upper Rad Hose If I Tuch It I Can Feel It Pualsating So I Thoght It Might Be The Sat Changed That Stil Dose It Could It Be A Bad Head Gasket Or Just Air And If It Air How Do I Get It Out ?
Post Fiend
Joined: Apr 2005
Posts: 5,720
Likes: 5
From: Washington state
is radiator cap new or seal ok, critical to no air in cooling system?
often small split will allow air to be pulled into system instead of coolant out of overflow tank
remove cap while cold, drawn down several inches of coolant out with turkey baster shop tool or use hose and use finger tip to plug end to hold coolant in to remove to container
start engine and bring up to temp carefully watching in fill hole for air bubbles and belches. Very small air bubbles, like champagne, indicate blown head gasket
. NJ summers and no effective water pump= probably blown head gasket.
any oily residue in filler neck
from Ford Service manual
Filling
1. WARNING: USE CAUTION WHEN ADDING COOLANT MIXTURE TO RADIATOR TO AVOID HOT COOLANT OR STEAM BLOW OUT FROM THE RADIATOR.
Note: Use the following steps to remove air from the cooling system and to make sure fill is complete.
Note: When filling a crossflow radiator (8005), allow time for the coolant to flow through the radiator tubes to fill both tanks.
Close radiator draincock and install cylinder block drain plug.
2. Fill the cooling system with a 50/50 ethylene glycol and water mixture. Allow several minutes for trapped air to escape (bubble out) and for coolant mixture to flow through the radiator.
3. Install radiator cap to pressure relief position by installing radiator cap to fully installed position and then backing off to first stop. This will allow any air to escape, and minimize spillage.
4. Slide heater temperature and mode selection levers to maximum heat position.
5. Start engine and run at fast idle (approximately 2000 rpm) for three to four minutes. Shut engine off.
6. With engine off, wrap radiator cap with a thick cloth, carefully remove radiator cap and add coolant to bring coolant level up to filler neck seat.
7. Replace radiator cap to fully installed position. Then, back off to first stop. Operate engine at fast idle until the upper radiator hose (8260) is warm (water thermostat (8575) opens). To check radiator, shut engine off, wrap radiator cap with thick cloth and carefully remove radiator cap. Add coolant if necessary. Replace radiator cap to fully installed position.
8. Open the small cap on the top of the radiator coolant recovery reservoir. The large cap is for the windshield washer reservoir. NEVER put coolant mixture in windshield washer bottle.
9. Using a suitable suction gun, remove all coolant from radiator coolant recovery reservoir.
10. Add 1 liter (1.1 quarts) of 50/50 mixture of ethylene glycol and water to the radiator coolant recovery reservoir. Close the small cap.
often small split will allow air to be pulled into system instead of coolant out of overflow tank
remove cap while cold, drawn down several inches of coolant out with turkey baster shop tool or use hose and use finger tip to plug end to hold coolant in to remove to container
start engine and bring up to temp carefully watching in fill hole for air bubbles and belches. Very small air bubbles, like champagne, indicate blown head gasket
. NJ summers and no effective water pump= probably blown head gasket.
any oily residue in filler neck
from Ford Service manual
Filling
1. WARNING: USE CAUTION WHEN ADDING COOLANT MIXTURE TO RADIATOR TO AVOID HOT COOLANT OR STEAM BLOW OUT FROM THE RADIATOR.
Note: Use the following steps to remove air from the cooling system and to make sure fill is complete.
Note: When filling a crossflow radiator (8005), allow time for the coolant to flow through the radiator tubes to fill both tanks.
Close radiator draincock and install cylinder block drain plug.
2. Fill the cooling system with a 50/50 ethylene glycol and water mixture. Allow several minutes for trapped air to escape (bubble out) and for coolant mixture to flow through the radiator.
3. Install radiator cap to pressure relief position by installing radiator cap to fully installed position and then backing off to first stop. This will allow any air to escape, and minimize spillage.
4. Slide heater temperature and mode selection levers to maximum heat position.
5. Start engine and run at fast idle (approximately 2000 rpm) for three to four minutes. Shut engine off.
6. With engine off, wrap radiator cap with a thick cloth, carefully remove radiator cap and add coolant to bring coolant level up to filler neck seat.
7. Replace radiator cap to fully installed position. Then, back off to first stop. Operate engine at fast idle until the upper radiator hose (8260) is warm (water thermostat (8575) opens). To check radiator, shut engine off, wrap radiator cap with thick cloth and carefully remove radiator cap. Add coolant if necessary. Replace radiator cap to fully installed position.
8. Open the small cap on the top of the radiator coolant recovery reservoir. The large cap is for the windshield washer reservoir. NEVER put coolant mixture in windshield washer bottle.
9. Using a suitable suction gun, remove all coolant from radiator coolant recovery reservoir.
10. Add 1 liter (1.1 quarts) of 50/50 mixture of ethylene glycol and water to the radiator coolant recovery reservoir. Close the small cap.
Last edited by 96_4wdr; Nov 5, 2005 at 03:22 AM.
